CN109755694A - Phase shifter and antenna for base station - Google Patents
Phase shifter and antenna for base station Download PDFInfo
- Publication number
- CN109755694A CN109755694A CN201910074181.5A CN201910074181A CN109755694A CN 109755694 A CN109755694 A CN 109755694A CN 201910074181 A CN201910074181 A CN 201910074181A CN 109755694 A CN109755694 A CN 109755694A
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- pull rod
- cable
- phase shifter
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- slab
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The embodiment of the present invention provides a kind of phase shifter and antenna for base station, is related to mobile communication equipment technical field, wherein phase shifter includes shell, pull rod, coaxial cable, cable fixing piece and dielectric-slab；It is equipped with radio frequency transmission chamber and pull rod movable chamber in shell, dielectric-slab is housed in that radio frequency transmission is intracavitary, and pull rod is slidably mounted at pull rod movable chamber, and one end of pull rod is connected with dielectric-slab；Cable fixing piece is buckled in the outer wall of shell, and cable fixing piece is equipped with cable trough, for clamping the coaxial cable being welded on housing exterior walls.Phase shifter provided by the invention, pull rod are housed in pull rod movable chamber, and pull rod movable chamber plays limit, support and guiding role during pull rod slidably reciprocates in pull rod movable chamber, can be interfered to avoid pull rod in sliding process with coaxial cable；In addition, coaxial cable is clamped in the cable trough on cable fixing piece, cable trough for coaxial cable provides support force in order to avoid the pad stress of coaxial cable is destroyed in pull rod drawing process.
Description
Technical field
The present embodiments relate to mobile communication equipment technical field more particularly to a kind of phase shifters and antenna for base station.
Background technique
Antenna for base station is setting for the network that last adjustment is supplied to user as the last controlling terminal of mobile communications network
It is standby.Core component of the phase shifter as antenna for base station, phase shift function can meet same model antenna in different using areas
Different lower decline angles is realized with different communication load regions, to provide bigger network capacity, reduces the interference of communication,
Reduce human cost.
Existing phase shifter mostly uses coaxial cable to be welded direct to the scheme of cavity, when welding cavity using surface into
The tin plating processing of row, the outer conductor of coaxial cable are welded on cavity wall, usually meet welding requirements, general outer conductor welding
Length is in 6~8mm, and the length of some coaxial cables is more than 1m, this causes in carrying, assembling and the process for transporting phase shifter
In, too long coaxial cable will cause solder joint stress, eventually leads to solder joint and is destroyed, and influence antenna overall performance.In addition, existing
The phase shift function of phase shifter typically pulls dielectric-slab mobile to realize, since existing pull rod is mostly to be located at by pull rod
The movement of limit pull rod is carried out in the part that is arranged end to end of cavity, so that pull rod be avoided to exist in the surface of cavity either side
Shake and deform in drawing process, once pulling force it is excessive be easy to cause it is stuck, and pull rod mostly be the table for being exposed at cavity
Face is easy to interfere with coaxial cable.
Summary of the invention
(1) technical problems to be solved
An object of the present invention is to provide a kind of phase shifter, is easy to solve coaxial cable solder joint in existing phase shifter
Stress causes solder joint destruction and the exposed problem of pull rod.
The second object of the present invention is to provide a kind of antenna for base station using above-mentioned phase shifter.
(2) technical solution
In order to solve the above-mentioned technical problem one of, the present invention provides a kind of phase shifter, including shell, pull rod, coaxial cable,
Cable fixing piece and dielectric-slab；Radio frequency transmission chamber and pull rod movable chamber are equipped in the shell, the dielectric-slab is housed in described
Radio frequency transmission is intracavitary, and the pull rod is slidably mounted at the pull rod movable chamber, one end of the pull rod and the dielectric-slab phase
Even；The cable fixing piece is buckled in the outer wall of the shell, and the cable fixing piece is equipped with cable trough, and the cable trough is used
It is welded the coaxial cable on the housing exterior walls in clamping.
Wherein, the cable fixing piece is equipped with fixture block, and the shell is equipped with the card hole matched with the fixture block.
Wherein, the cable fixing piece includes concave plate, and the cable trough is installed in the side of the concave plate；The line
Cable slot includes V-groove mouth and the slot body that is connected with the V-groove mouth, is equipped with wire casing, the slot body in the bottom of the concave plate
It is connected with the wire casing；The vertical plate of the concave plate and projection is arranged in into the concave plate in the fixture block.
Wherein, the outer wall of the shell is additionally provided with weld groove, and the outer conductor of the coaxial cable is welded in the weld groove, institute
Cable trough is stated to be oppositely arranged with the weld groove；Pcb board is also fixedly installed with the radio frequency transmission is intracavitary, the weld groove bottom is set
Have and passes through the through-hole and the pcb board with the intracavitary through-hole being connected of the radio frequency transmission, the inner conductor of the coaxial cable
It is connected.
Wherein, the pull rod movable chamber is located at the middle part of the radio frequency transmission chamber short transverse, and two weld grooves are along institute
The two sides up and down of the pull rod movable chamber are arranged in the short transverse for stating radio frequency transmission chamber.
Wherein, in the middle part of the weld groove on be additionally provided with welding resistance slot.
Wherein, the radio frequency transmission chamber is in stud, is divided into upper cavity and lower chamber, and the lateral wall of the shell, which is equipped with, to be used
In the logo slot for distinguishing the upper cavity and the lower chamber.
Wherein, further include middleware, one end of the middleware is socketed in the pull rod, the other end of the middleware with
The dielectric-slab is detachably connected.
Wherein, the middleware includes plate body, casing, inserted link and knob, and one end and the described sleeve pipe of the plate body are fixed
Connection, the other end are fixedly connected with the inserted link, and the pull rod is plugged in described sleeve pipe, and the inserted link is plugged in the medium
It is fixed together on plate and by the knob by the dielectric-slab and the plate body.
In order to solve the above-mentioned technical problem two, the present invention provides a kind of antenna for base station, including phase shifter as described above.
(3) beneficial effect
Phase shifter provided by the invention, pull rod are housed in pull rod movable chamber, and under the effect of external force, pull rod is living in pull rod
Move it is intracavitary slidably reciprocate, should during pull rod movable chamber play limit, support and guiding role, be only capable of pull rod living along pull rod
Dynamic chamber movement, and since pull rod is housed in pull rod movable chamber, it can be sent out to avoid pull rod in sliding process and coaxial cable
Raw interference；In addition, coaxial cable is clamped in the cable trough on cable fixing piece, cable trough provides support force for coaxial cable
In order to avoid the pad stress of coaxial cable is destroyed in pull rod drawing process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of phase shifter of the present invention；
Fig. 2 is partial enlarged view of the phase shifter shown in Fig. 1 in end；
Fig. 3 is the cooperation schematic diagram of shell and pull rod shown in Fig. 1；
Fig. 4 is partial enlarged view of the shell shown in Fig. 1 in end；
Fig. 5 is the sectional view of shell shown in Fig. 1；
Fig. 6 is the cooperation schematic diagram of shell and coaxial cable shown in Fig. 1；
Fig. 7 is the perspective view of cable fixing piece shown in Fig. 1；
Fig. 8 is the side view of cable fixing piece shown in fig. 7；
Fig. 9 is the cooperation schematic diagram of shell, cable fixing piece and coaxial cable shown in Fig. 1.
In figure: 10, shell；11, radio frequency transmission chamber；12, pull rod movable chamber；13, card hole；14, weld groove；15, through-hole；16,
Welding resistance slot；17, logo slot；20, dielectric-slab；30, pull rod；40, cable fixing piece；41, cable trough；42, fixture block；43, concave plate；
44, wire casing；50, coaxial cable；60, pcb board；70, middleware；71, plate body；72, casing；73, knob.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Phase shifter in the embodiment of the present invention, as depicted in figs. 1 and 2 comprising shell 10, dielectric-slab 20, pull rod 30, line
Cable fixing piece 40 and coaxial cable 50；It is equipped with the radio frequency transmission chamber 11 for accommodating dielectric-slab 20 in shell 10 and pacifies for sliding
The pull rod movable chamber 12 of pull rod 30 is filled, one end of pull rod 30 is connected with dielectric-slab 20；Cable fixing piece 40 is snapped in shell 10, together
Axis cable 50 is welded outside shell 10, and the cable trough 41 for clamping coaxial cable 50 is equipped on cable fixing piece 40.
Phase shifter in the embodiment of the present invention, pull rod 30 are housed in pull rod movable chamber 12, under the effect of external force, pull rod
30 slidably reciprocate in pull rod movable chamber 12, and pull rod movable chamber 12 plays limit, support and guiding role in sliding process, make
Pull rod 30 is only capable of moving along pull rod movable chamber 12, and since pull rod 30 is housed in pull rod movable chamber 12, can be to avoid
Pull rod 30 is interfered with coaxial cable 50 in sliding process；In addition, coaxial cable 50 is clamped in the line on cable fixing piece 40
In cable slot 41, in carrying, assembling and transportational process, support force is provided since cable trough 41 clamps coaxial cable 50, plays branch
The effect for supportting protection, it is possible to prevente effectively from the pad stress of coaxial cable 50 is destroyed in 30 drawing process of pull rod, to protect
Hinder the working performance of phase shifter.
As shown in figure 3, the one or both sides of radio frequency transmission chamber 11 are equipped with pull rod movable chamber 12, i.e. pull rod movable chamber 12 can be with
Only one can also have multiple, its ipsilateral or opposite side that can be located at radio frequency transmission chamber 11 when to be multiple.For example, when drawing
When bar movable chamber 12 only has one, the pull rod 30 being connected with the dielectric-slab 20 being housed in radio frequency transmission chamber 11 also only has one,
At this point, pull rod movable chamber 12 is located at the either side of radio frequency transmission chamber 11, under the effect of external force, pull rod 30 drives dielectric-slab 20
Backhaul dynamic adjustment phase place；When pull rod movable chamber 12 there are two when, two pull rod movable chambers 12 can be located at radio frequency transmission chamber 11
The ipsilateral opposite side that can also be located at radio frequency transmission chamber 11, at this point, there are two pull rod 30 is corresponding, wherein the one of two pull rods 30
A corresponding end is connected with dielectric-slab 20 respectively, and with the movement of pull rod 30, dielectric-slab 20 slidably reciprocates in radio frequency transmission chamber 11
Adjustment phase place.Pull rod movable chamber 12 divides chamber to form by multistage along what the length direction of shell 10 extended, is spaced between multiple points of chambers
Distribution.
Specifically, as shown in Figure 4 and Figure 5, radio frequency transmission chamber 11 is in day shape, is divided into upper cavity and lower chamber, upper cavity
It is separated between lower chamber by enclosure wall, two blocks of dielectric-slabs 20 is separately installed in upper cavity and lower chamber, at two pieces
Pcb board 60 is equipped between dielectric-slab 20, the inner conductor in coaxial cable 50 is welded and fixed with pcb board 60.In order to facilitate in differentiation
Cavity and lower chamber are additionally provided with logo slot 17 on the housing 10, and can clearly be distinguished by facilitating by two in post-production and use
Cavity.Wherein, pcb board 60 is located in radio frequency transmission chamber 11 and is fixedly connected with shell 10, drive of the dielectric-slab 20 in pull rod 30
Under can slidably reciprocate in radio frequency transmission chamber 11.Installation is respectively equipped in the middle part of the two lateral walls of upper cavity and lower chamber
Slot, the width of the mounting groove are greater than the width of corresponding upper cavity or lower chamber, and the opposite end of pcb board 60 is stuck in mounting groove
It is interior.Pull rod movable chamber 12 is located at the side of 11 width direction of radio frequency transmission chamber, and is located in 11 short transverse of radio frequency transmission chamber
Portion；There are two cable chambers, rounded, and two cable chambers are separately positioned on above and below pull rod movable chamber 12.Herein
Upper and lower is to be subject to the short transverse of radio frequency transmission chamber 11 to determine.
It is equipped with the card hole 13 extended along 11 short transverse of radio frequency transmission chamber in the outer wall of shell 10, which can be blind
Hole may be through-hole；Cable fixing piece 40 is equipped with fixture block 42 compatible with card hole 13, and fixture block 42 is connected in card hole 13
To which cable fixing piece 40 is fixedly mounted on the housing 10.Cable trough 41, shell are offered on the inner wall of cable fixing piece 40
10 outer walls offer the weld groove 14 for welding coaxial cable 50, after cable fixing piece 40 buckles on the housing 10, cable trough
41 are clamped on coaxial cable 50, provide support force for coaxial cable 50, prevent 50 stress desoldering of coaxial cable at solder joint.Coaxially
The cross sectional shape of cable 50 is generally circular, correspondingly, cable trough 41 and weld groove 14 are C-shaped channel；Certainly, when coaxial cable 50
Cross sectional shape when being rectangular or other shapes, cable trough 41 and weld groove 14 are square groove or other shapes, in a word cable trough 41
Opposite card is placed on the outer surface of coaxial cable 50 with both weld grooves 14, provides support force for coaxial cable 50, avoids coaxial cable
50 there is desoldering phenomenon with the solder joint stress of pcb board 60.
Cable fixing piece 40 in the embodiment of the present invention is made of plastic material, as shown in Figure 6 and Figure 7 comprising recessed
Template 43, the width in concave plate 43 are equal to the thickness of rectangular-shape shell 10；Wire casing 44 is equipped in the recess of concave plate 43,
Wire casing 44 extends along the width direction of concave plate 43, the form fit of shape and coaxial cable 50, for example, wire casing 44 can be
Circular trough；The side of concave plate 43 is arranged in cable trough 41 comprising V-groove mouth and the slot body being connected with V-groove mouth, slot body with
Wire casing 44 is connected to, and shape is consistent with the shape of wire casing 44；Coaxial cable 50 slides into be slid into slot body along V-groove mouth, in plastic cement
Coaxial cable 50 is held in cable trough 41 under the elastic reaction of itself.Internally distinguish on two vertical plates of concave plate 43
Projection fixture block 42 is respectively equipped with card hole 13 in the opposite sides of shell 10.The fixture block 42 can be circular columns or cuboid knot
Structure, wherein rounding corner structure is respectively adopted in the both ends of length direction, it is possible to prevente effectively from line when fixture block 42 is cuboid
Cable fixing piece 40 is rotated around fixture block 42.Correspondingly, card hole 13 is strip-shaped hole, and compared to round hole and columned fixture block 42, two
Fastener between person is more preferable.
Specifically, with continued reference to Fig. 8 and Fig. 9, the outer conductor of coaxial cable 50 is welded in weld groove 14, the slot bottom of weld groove 14
Equipped with passing through through-hole 15 with the inner conductor of the through-hole 15 that is connected inside radio frequency transmission chamber 11, coaxial cable 50 and be housed in radio frequency
Pcb board 60 in transmission cavity 11 is connected.Welding resistance slot 16 is equipped in the middle part of weld groove 14, which is used to block welding region,
Scolding tin can be saved in 50 welding process of coaxial cable in this way, while also can control the Infiltrating extrent of scolding tin, is guaranteed far from logical
The region coaxial cable 50 in hole 15 still welds securely.
Since radio frequency transmission chamber 11 is in day font, being separated in the inside of radio frequency transmission chamber 11 by enclosure wall is in upper and lower two
Cavity is fitted with a pcb board 60 in each cavity, and each pcb board 60 is connected with coaxial cable 50, therefore, coaxial cable
50 have two, correspondingly, setting in cable fixing piece 40, there are two C-shaped channels, and two C-shaped channels middle parts are equipped with and 12 phase of pull rod movable chamber
Pair changeover portion, be equipped in the cell wall of two C-shaped channels
In embodiments of the present invention, as shown in Fig. 2, being connected between dielectric-slab 20 and pull rod 30 by middleware 70, in this
Between one end of part 70 be fixedly connected with pull rod 30, the other end is detachably connected with dielectric-slab 20.For example, middleware 70 includes plate body
71, casing 72, inserted link and knob 73；One end of plate body 71 is fixedly connected with casing 72, and the other end is fixedly connected with inserted link；Knob
73 are rotatably installed in the end of inserted link.Casing 72 is set on pull rod 30 and by tightening of rivet, when pull rod 30 is rectangular
When bar, 72 inner chamber body of casing and 12 cross sectional shape of pull rod movable chamber are rectangular；Correspondingly, when pull rod 30 is circular pin, casing
The cross sectional shape of 72 inner chamber bodies and pull rod movable chamber 12 is circle.The extending direction of inserted link and the thickness direction one of dielectric-slab 20
It causes, through-thickness is equipped with jack on dielectric-slab 20, and inserted link is plugged in jack respectively, by rotating knob 73 for dielectric-slab
20 are fastenedly connected with middleware 70, in this way, can drive the synchronous fortune of dielectric-slab 20 via middleware 70 with the sliding of pull rod 30
It is dynamic.Specifically, radio frequency transmission chamber 11 is in stud, and it is two-by-two one group that there are four dielectric-slabs 20, in same group of intermediate installation
Pcb board 60, inserted link are vertically mounted on plate body 71, and one end of inserted link plugs in wherein one group of dielectric-slab 20, and another group plugs
In another set dielectric-slab 20；Knob 73 is separately installed at the both ends of inserted link.
In addition to this, the embodiment of the invention also provides a kind of antenna for base station using above-mentioned phase shifter, by using upper
Phase shifter is stated, the stability for improving 50 weld of coaxial cable avoids pull rod 30 and too long coaxial cable 50 from occurring to do simultaneously
It relates to.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of phase shifter, which is characterized in that including shell, pull rod, coaxial cable, cable fixing piece and dielectric-slab；The shell
It is equipped with radio frequency transmission chamber and pull rod movable chamber in vivo, the dielectric-slab is housed in that the radio frequency transmission is intracavitary, and the pull rod can be slided
Dynamic to be installed on the pull rod movable chamber, one end of the pull rod is connected with the dielectric-slab；The cable fixing piece is buckled in institute
The outer wall of shell is stated, the cable fixing piece is equipped with cable trough, and the cable trough is welded for clamping in the housing exterior walls
On the coaxial cable.
2. phase shifter according to claim 1, which is characterized in that the cable fixing piece is equipped with fixture block, the shell
It is equipped with the card hole matched with the fixture block.
3. phase shifter according to claim 2, which is characterized in that the cable fixing piece includes concave plate, the cable
Slot is installed in the side of the concave plate；The cable trough includes V-groove mouth and the slot body that is connected with the V-groove mouth, in institute
The bottom for stating concave plate is equipped with wire casing, and the slot body is connected with the wire casing；The vertical of the concave plate is arranged in the fixture block
On plate and towards in the concave plate.
4. phase shifter according to claim 1, which is characterized in that the outer wall of the shell is additionally provided with weld groove, described coaxial
The outer conductor of cable is welded in the weld groove, and the cable trough is oppositely arranged with the weld groove；It is intracavitary in the radio frequency transmission
It is also fixedly installed with pcb board, the weld groove bottom is equipped with and the intracavitary through-hole being connected of the radio frequency transmission, the coaxial cable
Inner conductor pass through the through-hole be connected with the pcb board.
5. phase shifter according to claim 4, which is characterized in that it is high that the pull rod movable chamber is located at the radio frequency transmission chamber
The middle part in direction is spent, the upper and lower of the pull rod movable chamber is arranged in along the short transverse of the radio frequency transmission chamber in two weld grooves
Two sides.
6. phase shifter according to claim 4, which is characterized in that be additionally provided with welding resistance slot in the middle part of the weld groove.
7. phase shifter according to claim 1, which is characterized in that the radio frequency transmission chamber is in stud, is divided into upper cavity
And lower chamber, the lateral wall of the shell are equipped with the logo slot for distinguishing the upper cavity Yu the lower chamber.
8. phase shifter according to claim 1, which is characterized in that it further include middleware, one end socket of the middleware
In the pull rod, the other end of the middleware is detachably connected with the dielectric-slab.
9. phase shifter according to claim 8, which is characterized in that the middleware includes plate body, casing, inserted link and rotation
One end of button, the plate body is fixedly connected with described sleeve pipe, and the other end is fixedly connected with the inserted link, and the pull rod is plugged on institute
It states in casing, the inserted link is plugged on the dielectric-slab and is fixed on the dielectric-slab and the plate body by the knob
Together.
10. a kind of antenna for base station, which is characterized in that the antenna for base station includes such as the described in any item phase shifts of claim 1-9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074181.5A CN109755694B (en) | 2019-01-25 | 2019-01-25 | Phase shifter and base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074181.5A CN109755694B (en) | 2019-01-25 | 2019-01-25 | Phase shifter and base station antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109755694A true CN109755694A (en) | 2019-05-14 |
| CN109755694B CN109755694B (en) | 2021-05-28 |
Family
ID=66406260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910074181.5A Active CN109755694B (en) | 2019-01-25 | 2019-01-25 | Phase shifter and base station antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109755694B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029689A (en) * | 2019-11-07 | 2020-04-17 | 广东通宇通讯股份有限公司 | Dielectric phase shifter |
| CN111585024A (en) * | 2020-05-20 | 2020-08-25 | 武汉虹信通信技术有限责任公司 | Dielectric phase shifter and 5G base station antenna |
| WO2021036779A1 (en) * | 2019-08-26 | 2021-03-04 | 广东博纬通信科技有限公司 | Cavity-type phase shifter |
| CN113394530A (en) * | 2021-06-11 | 2021-09-14 | 中信科移动通信技术股份有限公司 | Microwave device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261835A (en) * | 2014-11-11 | 2016-01-20 | 李梓萌 | Adjustable phase shift device for array antenna, and antenna |
| CN106887705A (en) * | 2017-03-10 | 2017-06-23 | 武汉虹信通信技术有限责任公司 | A kind of cavity type phase shifter |
-
2019
- 2019-01-25 CN CN201910074181.5A patent/CN109755694B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261835A (en) * | 2014-11-11 | 2016-01-20 | 李梓萌 | Adjustable phase shift device for array antenna, and antenna |
| CN106887705A (en) * | 2017-03-10 | 2017-06-23 | 武汉虹信通信技术有限责任公司 | A kind of cavity type phase shifter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036779A1 (en) * | 2019-08-26 | 2021-03-04 | 广东博纬通信科技有限公司 | Cavity-type phase shifter |
| CN111029689A (en) * | 2019-11-07 | 2020-04-17 | 广东通宇通讯股份有限公司 | Dielectric phase shifter |
| CN111029689B (en) * | 2019-11-07 | 2021-10-22 | 广东通宇通讯股份有限公司 | Dielectric phase shifter |
| CN111585024A (en) * | 2020-05-20 | 2020-08-25 | 武汉虹信通信技术有限责任公司 | Dielectric phase shifter and 5G base station antenna |
| CN113394530A (en) * | 2021-06-11 | 2021-09-14 | 中信科移动通信技术股份有限公司 | Microwave device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109755694B (en) | 2021-05-28 |
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Effective date of registration: 20201029 Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Applicant after: Wuhan Hongxin Technology Development Co.,Ltd. Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Applicant before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
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Effective date of registration: 20221130 Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: Wuhan Hongxin Technology Development Co.,Ltd. |